CN206771731U - A kind of energy-saving gas burning boiler with less environmental - Google Patents
A kind of energy-saving gas burning boiler with less environmental Download PDFInfo
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- CN206771731U CN206771731U CN201720434619.2U CN201720434619U CN206771731U CN 206771731 U CN206771731 U CN 206771731U CN 201720434619 U CN201720434619 U CN 201720434619U CN 206771731 U CN206771731 U CN 206771731U
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- boiler
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- airduct
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Abstract
A kind of energy-saving gas burning boiler with less environmental, including base, boiler body and purification exhaust system, burner and heat conduction case are provided with boiler body, heat conduction box top is connected with flue gas delivery pipe, dividing plate is sealedly connected between burner top and boiler body, combustion chamber is formed in heat conduction case, heat conduction case is outer to be provided with water inlet and delivery port with dividing plate and boiler body formation Heat Room, boiler body；Purify exhaust system, including casing and the baffle-box and purifying box that are located in casing, casing side is respectively equipped with smoke-intake pipe and pipe, scavenging solution is marked with purifying box, casing inner top level is provided with shower, the baffle plate, two neighboring baffle plate or so that cabinet wall interval and level are provided between pipe and smoke-intake pipe is staggered.The utility model flameholding, high combustion efficiency, heat utilization rate are high, flue gas can be purified, good purification, purification efficiency height.
Description
Technical field
The utility model belongs to gas fired-boiler technical field, more particularly to a kind of energy-saving gas burning boiler with less environmental.
Background technology
Boiler is a kind of energy conversion, and the energy inputted to boiler has chemical energy, electric energy, high-temperature flue gas in fuel
The form such as heat energy, and pass through the conversion of boiler, outwards steam, high-temperature water or organic heat carrier of the output with certain heat energy.
In boiler caused hot water or steam can directly for industrial production and people's lives provide needed for heat energy, can also pass through steam power
Device is converted to mechanical energy, or converts mechanical energy into electric energy by generator again.Gas fired-boiler refers to fuel for combustion gas
Boiler, gas fired-boiler include gas hot water boiler, gas-fired water heating boiler, gas-steam boiler etc..Existing gas fired-boiler can not
Fully burning, combustion gas are not sufficiently mixed with air in a short time, and burning is insufficient, causes the wasting of resources, and combustion gas
It is unstable during burning, therefore efficiency of combustion is greatly reduced, add production cost.Boiler in use,
Substantial amounts of fume emission can be produced, the harmful substances such as carbide, nitride, sulfide, flue dust solid content are contained in these flue gases,
The health of people is not only damaged, also environment is polluted, is the major pollutants of air pollution, causes the weight such as haze, acid rain
The atmosphere pollution phenomenon wanted.As harm of people's growing interest fume emission to air quality recognizes, to big caused by boiler
The problem of gas pollutes is urgently to be resolved hurrily.
Utility model content
The utility model is in order to solve weak point of the prior art, there is provided a kind of flameholding, high combustion efficiency, heat
Can utilization rate is high, can be purified to flue gas, good purification, purification efficiency are high energy-saving gas burning boiler with less environmental.
In order to solve the above technical problems, the utility model adopts the following technical scheme that：A kind of energy-saving gas burning boiler with less environmental, bag
Base, the boiler body being located on base and the purification exhaust system being connected with boiler body are included, is provided with boiler body
Burner and heat conduction case, heat conduction case are arranged on burner, and heat conduction box top is connected with flue gas delivery pipe, flue gas delivery pipe
Protruding boiler body, dividing plate is sealedly connected between burner top and boiler body, combustion chamber is formed in heat conduction case,
Heat conduction case is outer to be provided with water inlet and delivery port with dividing plate and boiler body formation Heat Room, boiler body；Purify exhaust system,
Including casing and the baffle-box and purifying box that are located in casing, casing side is respectively equipped with smoke-intake pipe and pipe, smoke-intake pipe with
Flue gas delivery pipe flange is connected, and smoke-intake pipe is extended inwardly into casing and is connected with baffle-box, is led between baffle-box and purifying box
Cross airway tube to be connected, air inducing is provided with baffle-box and is fanned, airway tube is provided with check valve, scavenging solution is marked with purifying box, purifies
Bottom portion is connected with feed tube, and purifying box sidepiece is connected with woven hose, and the protruding casing of woven hose is simultaneously connected with liquid supercharging
Pump, casing inner top level are provided with shower, are interval with the atomizer sprayed downwards on shower, shower is protruding
Casing is simultaneously connected by catheter with liquid booster pump, cabinet wall interval and it is horizontal be provided with positioned at pipe and smoke-intake pipe it
Between baffle plate, two neighboring baffle plate or so be staggered.
The burner includes burning seat, and heat conduction case is fixedly connected on burning seat upper surface, and burning seat passes through support column
It is fixed on base, offers mixing chamber in the seat that burns, mixing chamber lower end is connected with combustion gas inlet pipe, gas is provided with combustion gas inlet pipe
Body booster pump, mixing chamber upper end are provided with tray for combustion, and tray for combustion is fixedly connected on burning seat, and burning is interval with tray for combustion
Mouth, burning seat both sides are connected to blast pipe, and the protruding boiler body of blast pipe is simultaneously connected with air blower, and blast pipe is inside
It extend into burning seat and is connected with the first airduct and the second airduct, the junction shape of the first airduct, the second airduct and blast pipe
Into three-port structure, the first airduct and combustion chamber, the second airduct are connected with mixing chamber, and mixing chamber top both sides are set respectively
There is the igniter between tray for combustion and the second airduct.
Being horizontally disposed with heat conduction case has buffer board, is spaced apart on buffer board and is provided with air-vent.
Purifier is provided with each baffle plate, purifier includes waterproof ventilated membrane, activated carbon successively from top to bottom
Filter layer and bottom plate, bottom plate are connected to baffle plate lower surface, are spaced apart on bottom plate and are provided with through hole, activated carbon filter layer passes through string bag bag
Wrap up in and be placed on, waterproof ventilated membrane is covered in activated carbon filter layer surface.
Each baffle plate tilts down setting.
The combustion gas inlet pipe is provided with the control valve between mixing chamber and gas booster pump, the blast pipe and first
Airduct, the junction of the second airduct are provided with three-way control valve.
The boiler body inwall is provided with the thermal insulation layer in Heat Room.
Screen pack is provided with smoke-intake pipe, ventilating fan is provided with pipe.
Using above-mentioned technical proposal, the utility model has the following advantages that：
1st, combustion gas is pressurized rapidly by burner using gas boosting pump in the utility model, is entered through combustion gas inlet pipe mixed
In air chamber, while portion of air is delivered in mixing chamber by air blower by blast pipe through the second airduct so that air and combustion
Gas is mixed, then lighting through igniter so that combustion gas conflagration, the flame after burning spray through burner, led in addition
Cross blast pipe to be delivered to portion of air in combustion chamber through the first airduct, ensure that combustion gas is fully burnt in combustion chamber；Using
Said apparatus is simple in construction, simple operation, and ensure that the abundant burning of combustion gas.
2nd, combustion gas caused flue gas after being burnt in boiler body, in the presence of air inducing fan, through flue gas delivery pipe and enter
Smoke pipe is entered in baffle-box, and the screen pack in smoke-intake pipe is adsorbed the large particulate matter in flue gas, into baffle-box
Flue gas entered through airway tube in purifying box, and reacted with the scavenging solution in purifying box, so as to by the harmful substance in flue gas
Remove, the check valve on airway tube can avoid the scavenging solution in purifying box from entering in baffle-box, and reacted flue gas is through net
Change case to discharge, in the presence of the ventilating fan in pipe, flue gas flows up, while the scavenging solution in purifying box increases in liquid
Finally sprayed downwards in the presence of atomizer through woven hose, catheter and shower in the presence of press pump, through atomizer
The scavenging solution of ejection further reacts with the flue gas flowed up, so as to further remove the harmful substance in flue gas.
3rd, the utility model is heated by the water caused by burner combustion gas in heat heat exchanging room, is led
The setting of hot tank adds area of dissipation, makes full use of the heat in combustion chamber, is provided with buffer board in heat conduction case, can slow down cigarette
The speed that gas flows up so that during heat flows up with flue gas in combustion chamber, the heat in flue gas is made full use of,
Improve heat utilization ratio.
4th, during burning, the air inflow of combustion gas can be changed by adjusting control valve, and coordinate regulation threeway
Regulating valve is adjusted into the intake in mixing chamber and combustion chamber, so as to adjust combustion efficiency, and ensures that combustion gas is fully burnt,
Efficiency of combustion is substantially increased, makes full use of resource；The thermal insulation layer of boiler body inwall can avoid heat from being dissipated through boiler body
Send out so that heat energy is fully utilized caused by fuel gas buring.
5th, the setting for purifying baffle plate in exhaust system can be with the flowing velocity of reducing smoke so that flue gas is abundant with scavenging solution
Reaction,, can be by flue gas in the presence of activated carbon filter layer in addition, through hole of the flue gas through baffle plate upper plate enters
Harmful substance is removed, and flue gas is discharged through waterproof ventilated membrane again, and clean-up effect is substantially increased using said apparatus.
6th, each baffle plate tilts down setting so that fall after the scavenging solution reaction that atomizer sprays on baffle plate, then
Flowed into through baffle plate in purifying box, utilization can be re-started, formed circulation, when the fluid low in purifying box, can pass through
Feed tube after-purification liquid into purifying box.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the enlarged drawing at A in Fig. 1；
Fig. 3 is the enlarged drawing at C in Fig. 1.
Embodiment
As Figure 1-3, a kind of energy-saving gas burning boiler with less environmental of the present utility model, including base 1, be located on base 1
Boiler body 2 and the purification exhaust system being connected with boiler body 2, boiler body 2 is interior to be provided with burner and heat conduction case
3, heat conduction case 3 is arranged on burner, and the top of heat conduction case 3 is connected with flue gas delivery pipe 4,4 protruding pot of flue gas delivery pipe
Furnace body 2, dividing plate 5 is sealedly connected between burner top and boiler body 2, combustion chamber 6, heat conduction are formed in heat conduction case 3
Case 3 is outer to be provided with water inlet 8 and delivery port 9, the He of water inlet 8 with dividing plate 5 and the formation Heat Room 7 of boiler body 2, boiler body 2
Delivery port 9 is connected with Heat Room 7, and water inlet 8 is located at the bottom of Heat Room 7, and outlet pipe is located at the top of Heat Room 7；Only
Change exhaust system, including casing 10 and the baffle-box 11 and purifying box 12 that are located in casing 10, the side of casing 10 be respectively equipped with into
Smoke pipe 13 and pipe 14, smoke-intake pipe 13 are located at the side lower of casing 10, and pipe 14 is located at the side surface upper part of casing 10, smoke-intake pipe
13 are connected with the flange of flue gas delivery pipe 4, and smoke-intake pipe 13 is extended inwardly into casing 10 and is connected with baffle-box 11, the He of baffle-box 11
It is connected between purifying box 12 by airway tube 15, baffle-box 11 and purifying box 12 are respectively positioned on the bottom of casing 10, baffle-box 11
Interior to be provided with air inducing fan 16, airway tube 15 is provided with check valve 17, and scavenging solution 18 is marked with purifying box 12, and the top of purifying box 12 is spacious
Mouthful, the bottom of purifying box 12 is connected with feed tube 19, the protruding casing 10 of feed tube 19, and the sidepiece of purifying box 12 is connected with woven hose
20, the protruding casing 10 of woven hose 20 is simultaneously connected with liquid booster pump 21, and the inner top of casing 10 level is provided with shower 22, sprays
The atomizer 23 sprayed downwards is interval with shower pipe 22, the protruding casing 10 of shower 22 simultaneously passes through catheter 24 and liquid
Body booster pump 21 is connected, and atomizer 23 is located at the top of pipe 14, and the inwall interval of casing 10 and level, which are provided with, is located at smoke
Baffle plate 25 between pipe 14 and smoke-intake pipe 13, two neighboring baffle plate 25 or so are staggered.
The burner includes burning seat 26, and heat conduction case 3 is fixedly connected on burning seat 26 upper surface, and burning seat 26 passes through
Support column 27 is fixed on base 1, and mixing chamber 28 is offered in the seat 26 that burns, and the lower end of mixing chamber 28 is connected with combustion gas inlet pipe 29,
Gas boosting pump 30 is provided with combustion gas inlet pipe 29, the upper end of mixing chamber 28 is provided with tray for combustion 31, and tray for combustion 31 is fixedly connected on
Burn on seat 26, burner 32 is interval with tray for combustion 31, burning seat 26 both sides are connected to blast pipe 33, blast pipe 33
Protruding boiler body 2 is simultaneously connected with air blower 34, and blast pipe 33 extends inwardly into burning seat 26 and is connected with the first wind
The airduct 36 of pipe 35 and second, the first airduct 35, the junction of the second airduct 36 and blast pipe 33 form three-port structure, the first airduct
35 are connected with combustion chamber 6, and the second airduct 36 is connected with mixing chamber 28, and the top both sides of mixing chamber 28 are respectively equipped with positioned at burning
Igniter 37 between the airduct 36 of disk 31 and second.
Being horizontally disposed with heat conduction case 3 has buffer board 38, is spaced apart on buffer board 38 and is provided with air-vent 39.
Purifier 40 is provided with each baffle plate 25, purifier 40 includes waterproof ventilated membrane successively from top to bottom
41st, activated carbon filter layer 42 and bottom plate 43, bottom plate 43 are connected to the lower surface of baffle plate 25, are spaced apart on bottom plate 43 and are provided with through hole 44,
Activated carbon filter layer 42 is wrapped up and is placed on bottom plate 43 by the string bag, and waterproof ventilated membrane 41 is covered in the table of activated carbon filter layer 42
Face.
Each baffle plate 25 tilts down setting.
The combustion gas inlet pipe 29 is provided with the control valve 45 between mixing chamber 28 and gas booster pump 30, the air intake
The airduct 35 of pipe 33 and first, the junction of the second airduct 36 are provided with three-way control valve 46.
The inwall of boiler body 2 is provided with the thermal insulation layer 47 in Heat Room 7.
Screen pack 48 is provided with smoke-intake pipe 13, ventilating fan 49 is provided with pipe 14.
The utility model in use, inject water into Heat Room 7 by water inlet pipe, is passed through in work into combustion gas inlet pipe 29
Combustion gas, combustion gas are pressurized rapidly in the presence of gas boosting pump 30, are entered through combustion gas inlet pipe 29 in mixing chamber 28, while air blast
Portion of air is delivered in mixing chamber 28 by machine 34 by blast pipe 33 through the second airduct 36 so that air is mixed with combustion gas
Close, then lighting through igniter 37 so that combustion gas conflagration, the flame after burning spray through burner 32, in addition air blower
34 are delivered to portion of air in combustion chamber 6 through the first airduct 35 by blast pipe 33, ensure combustion gas in combustion chamber 6 fully
Burning, further heat is distributed to periphery in the presence of heat conduction case 3, caused heat energy passes through heat conduction case 3 after fuel gas buring
Heat Room 7 is passed, the water exchanged in hot cell 7 is heated, and the water after heating is discharged through delivery port 9, and fuel gas buring is produced
Raw flue gas is delivered to purification exhaust system by flue gas delivery pipe 4, and flue gas fans 16 through flue gas delivery pipe 4 and smoke-intake pipe 13 in air inducing
In the presence of, enter in baffle-box 11, the screen pack 48 in smoke-intake pipe 13 is adsorbed the large particulate matter in flue gas, is entered
The flue gas entered in baffle-box 11 is entered in purifying box 12 through airway tube 15, and is reacted with the scavenging solution 18 in purifying box 12, from
And remove the harmful substance in flue gas, the check valve 17 on airway tube 15 can avoid the scavenging solution 18 in purifying box 12 from entering
Into baffle-box 11, the reacted purified case 12 of flue gas is discharged, in the presence of the ventilating fan 49 in pipe 14, flue gas to
Upper flowing, while the scavenging solution 18 in purifying box 12 through woven hose 20, catheter 24 and sprays in the presence of liquid booster pump 21
Shower pipe 22 finally sprays downwards in the presence of atomizer 23, the scavenging solution 18 that is sprayed through atomizer 23 and flows up
Flue gas further reacts, and so as to further remove the harmful substance in flue gas, the setting of baffle plate 25 can be with the stream of reducing smoke
Dynamic speed so that flue gas sufficiently reacts with scavenging solution 18, in addition, through hole 44 of the flue gas through the upper plate 43 of baffle plate 25 enters,
In the presence of activated carbon filter layer 42, the harmful substance in flue gas can be removed, flue gas is discharged through waterproof ventilated membrane 41 again, most
The flue gas after purification is discharged through pipe 14 eventually.During burning, entering for combustion gas can be changed by adjusting control valve 45
Tolerance, and the intake for coordinating regulation three-way control valve 46 to be adjusted into mixing chamber 28 and combustion chamber 6, so as to adjust combustion
Effect is burnt, and ensures that combustion gas is fully burnt, the thermal insulation layer 47 of the inwall of boiler body 2 can avoid heat from being distributed through boiler body 2
Go out so that the utilization to heat is more abundant.
The present embodiment not makees any formal limitation, every foundation to shape of the present utility model, material, structure etc.
Any simple modification, equivalent change and modification that the technical essence of the utility model is made to above example, belongs to this reality
With the protection domain of new technique scheme.
Claims (8)
- A kind of 1. energy-saving gas burning boiler with less environmental, it is characterised in that：Including base, the boiler body being located on base and and boiler The purification exhaust system that body is connected, boiler body is interior to be provided with burner and heat conduction case, and heat conduction case is arranged on burner On, heat conduction box top is connected with flue gas delivery pipe, the protruding boiler body of flue gas delivery pipe, burner top and boiler sheet It is sealedly connected with dividing plate between body, forms combustion chamber in heat conduction case, heat conduction case is outer with dividing plate and boiler body formation Heat Room, pot Furnace body is provided with water inlet and delivery port；Exhaust system, including casing and the baffle-box and purifying box that are located in casing are purified, Casing side is respectively equipped with smoke-intake pipe and pipe, and smoke-intake pipe is connected with flue gas delivery pipe flange, and smoke-intake pipe extends inwardly into casing It is interior and be connected with baffle-box, it is connected between baffle-box and purifying box by airway tube, air inducing is provided with baffle-box and is fanned, air guide Pipe is provided with check valve, and scavenging solution is marked with purifying box, and purifying box bottom is connected with feed tube, and purifying box sidepiece is connected with transfusion Pipe, the protruding casing of woven hose are simultaneously connected with liquid booster pump, and casing inner top level is provided with shower, is spaced on shower Provided with the atomizer sprayed downwards, the protruding casing of shower is simultaneously connected by catheter with liquid booster pump, casing The baffle plate, two neighboring baffle plate or so that inwall interval and level are provided between pipe and smoke-intake pipe is staggered.
- 2. energy-saving gas burning boiler with less environmental according to claim 1, it is characterised in that：The burner includes burning seat, Heat conduction case is fixedly connected on burning seat upper surface, and burning seat is fixed on base by support column, and mixed gas is offered in the seat that burns Room, mixing chamber lower end are connected with combustion gas inlet pipe, and gas boosting pump is provided with combustion gas inlet pipe, and mixing chamber upper end is provided with burning Disk, tray for combustion are fixedly connected on burning seat, and burner is interval with tray for combustion, and burning seat both sides are connected to air intake Pipe, the protruding boiler body of blast pipe are simultaneously connected with air blower, and blast pipe, which extends inwardly into, burns in seat and be connected with first Airduct and the second airduct, the junction of the first airduct, the second airduct and blast pipe form three-port structure, the first airduct and combustion chamber It is connected, the second airduct is connected with mixing chamber, and mixing chamber top both sides are respectively equipped between tray for combustion and the second airduct Igniter.
- 3. energy-saving gas burning boiler with less environmental according to claim 1 or 2, it is characterised in that：In heat conduction case be horizontally disposed with have it is slow Punching, it is spaced apart on buffer board and is provided with air-vent.
- 4. energy-saving gas burning boiler with less environmental according to claim 1, it is characterised in that：Purification dress is provided with each baffle plate Put, purifier includes waterproof ventilated membrane, activated carbon filter layer and bottom plate successively from top to bottom, and bottom plate is connected to baffle plate following table Face, it is spaced apart on bottom plate and is provided with through hole, activated carbon filter layer is wrapped up and is placed on by the string bag, and waterproof ventilated membrane covers On activated carbon filter layer surface.
- 5. energy-saving gas burning boiler with less environmental according to claim 4, it is characterised in that：Each baffle plate tilts down setting.
- 6. energy-saving gas burning boiler with less environmental according to claim 2, it is characterised in that：The combustion gas inlet pipe is provided with positioned at mixed Control valve between air chamber and gas booster pump, the blast pipe and the first airduct, the junction of the second airduct are adjusted provided with threeway Save valve.
- 7. energy-saving gas burning boiler with less environmental according to claim 1, it is characterised in that：The boiler body inwall, which is provided with, to be located at Thermal insulation layer in Heat Room.
- 8. energy-saving gas burning boiler with less environmental according to claim 1, it is characterised in that：Screen pack, smoke are provided with smoke-intake pipe Ventilating fan is provided with pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720434619.2U CN206771731U (en) | 2017-04-24 | 2017-04-24 | A kind of energy-saving gas burning boiler with less environmental |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720434619.2U CN206771731U (en) | 2017-04-24 | 2017-04-24 | A kind of energy-saving gas burning boiler with less environmental |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206771731U true CN206771731U (en) | 2017-12-19 |
Family
ID=60634309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720434619.2U Expired - Fee Related CN206771731U (en) | 2017-04-24 | 2017-04-24 | A kind of energy-saving gas burning boiler with less environmental |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206771731U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108355450A (en) * | 2018-05-02 | 2018-08-03 | 深圳市创意智能科技有限公司 | A kind of environment-protection boiler with off-gas recovery function |
| CN109532908A (en) * | 2018-09-07 | 2019-03-29 | 江苏九州电器有限公司 | Compartment electric heater with deflector |
| CN111964145A (en) * | 2020-08-12 | 2020-11-20 | 广州国智机电设备有限公司 | Heating energy-saving equipment |
-
2017
- 2017-04-24 CN CN201720434619.2U patent/CN206771731U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108355450A (en) * | 2018-05-02 | 2018-08-03 | 深圳市创意智能科技有限公司 | A kind of environment-protection boiler with off-gas recovery function |
| CN109532908A (en) * | 2018-09-07 | 2019-03-29 | 江苏九州电器有限公司 | Compartment electric heater with deflector |
| CN111964145A (en) * | 2020-08-12 | 2020-11-20 | 广州国智机电设备有限公司 | Heating energy-saving equipment |
| CN111964145B (en) * | 2020-08-12 | 2021-09-07 | 唐山市丰南区鑫丰热力有限公司 | Heating energy-saving equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Energy-saving and environmental-friendly gas boiler Effective date of registration: 20181212 Granted publication date: 20171219 Pledgee: Henan Runan Rural Commercial Bank Co., Ltd. Pledgor: The dynamo-electric Co., Ltd of Henan Province's Yuyuan Garden boiler Registration number: 2018410000022 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20200525 Granted publication date: 20171219 Pledgee: Henan Runan Rural Commercial Bank Co., Ltd. Pledgor: HENAN YUYUAN BOILER MACHINERY Co.,Ltd. Registration number: 2018410000022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 Termination date: 20200424 |